电梯减速器输出轴的疲劳断裂分析  

Fatigue Fracture Analysis of Elevator Reducer Output Shaft

作　　者：杨利[1] 芮执元[1] 罗德春[1] 曹卉[1] 胡序春 芦士惠 

机构地区：[1]兰州理工大学机电工程学院,甘肃兰州730050

出　　处：《机械传动》2016年第1期127-131,共5页Journal of Mechanical Transmission

摘　　要：为了找到某型号电梯减速器输出轴突然断裂的原因,通过试验方法得到主轴的化学性能、机械性能和材料性能,进行应力、疲劳强度和疲劳寿命的理论计算。并运用有限元方法对不同曲率半径的键槽进行疲劳分析,和理论的疲劳计算结果相比较,得出断裂的原因是键槽上的低曲率半径引起的高缺口效应。分析结果表明,主轴键槽拐角高应力随着键槽拐角曲率半径增大而减小,疲劳寿命随之延长。In order to find the cause of an elevator reducer output shaft fracture,the chemical property,mechanical property and material property are obtained through the experimental method,the theoretical calculation of stress,fatigue strength and fatigue life are carried out. The fatigue analysis of keyway with different curvature radius carried out by using the finite element method（ FEM）,and comparing with the theoretical result,it is concluded that the reason of fracture is higher notch effect of low curvature radius on the keyway. The results show that high stress on axes keyway corner decrease with the increase of curvature radius,as the fatigue life become longer.

关 键 词：疲劳分析 驱动轴 失效 有限元法 

分 类 号：TU857[建筑科学]